Round up the usual suspects, there are new DOOM 3 Q&As online on
GameSpot,
GameSpy,
and IGN, each
including answers from Todd Hollenshead and Tim Willits, with the middle of the
three articles also adding Marty Stratton to the mix to reduce the sensation of
deja vu. Here's a bit from the GameSpy Q&A on the laurel-resting they are
engaged in now that DOOM 3 is done:

Tim Willits: Our very talented
art staff has already started on the next game. Kenneth (Scott, id Software
artist) is leading the team, working on some proof-of-concept stuff, and he's
working on some conceptual art, and doing some really great stuff. So those guys
have already started on the next game, which is awesome. Of course, a few of us
will take vacations here and there, but we're not a rock band (laughs); we don't
take off for six months after we go on tour. This is our job, and we've already
started on the next title.